Genetic Association in f2 Populations and their Potential in the Improvement of Grain Yield in Pearl Millet [Pennisetum Glaucum (l.) R. Br.]
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- Correlation, F two Generation, Path Analysis, Pearl Millet
- Badhe, P. L.; Rasal, P. N.; Kharat, R. C.
- This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. CC BY-NC-SA 4.0 Creative Commons License: https://creativecommons.org/licenses/by-nc-sa/4.0/
- The phenotypic correlation and path coefficient were worked out for F2 generation of three crosses of pearl millet for ten characters. Grain yield plant-1 had significant and positive correlations with effective tillers per plant, ear head girth and plant height in all three crosses of F2 generation. Path analysis revealed that the effective tillers per plant made appreciable positive and direct contribution to grain yield, consistently in all three crosses. Other components which had direct and consistent contribution towards grain yield, but in a small magnitude, in all three crosses were; ear head girth, plant height, days to maturity and Zn content (except cross RHRBI-138 X S/12-30088). The direct contributions of 1000-grain weight were low magnitude to grain yield in cross RHRBI-138 X S/12-30088 revealed its important role in its correlation with grain yield which was reduced to non-significant values in some crosses because of negative indirect effect of other componential characters. It can be concluded that effective tillers per plant, ear head girth, 1000-grain weight, plant height and ear head length are important components of grain yield in all three crosses which should be considered when any breeding program for higher yield in pearl millet is to be planned.
Full text: IJRAS_453_FINAL.pdf